Making a few chairs for a kids set, upper back support is 18"W and 3" t 3/4" thick. I would like to dish it a 1/8" to make it more comfortable,I usually just cut out a rough dish on the band saw, and sand it. Bobcad v24 software , thanks for your help. For example, I have a board X=17.75" Y=3." X 3/4" thick. I want to dish out the 3" surface, from zero , at both ends, to 1/8" depth in the center of x 17.75, I would like it to be dished, instead of a straight taper from the sides.


Ed C